matplotlib conditional formatting labels

Question

I have an horizontal barchart in which I am setting the labels with the command:

ax.set_yticklabels(df_chart.country_group)

I need some of the labels to be bold (and if possible aligned center-ly) depending on some name of the label.

I have tried with:

ax.set_yticklabels(df_chart.country_group, weight=["bold", "bold", "normal"...])

but the function does not accept a list. I have tries also with a loop:

for label in ax.get_yticklabels():
     if label in ["World", "Developing countries", "Developed countries"]:
         label.set_fontproperties(weight="bold")

but I was not able to extract the label value from the Text object.

ImportanceOfBeingErnest · Accepted Answer · 2018-07-30 10:29:10Z

2

Correct, you cannot use a list for such font properties. The second approach goes in the right direction. You need to get_text() from the labels to compare with some other string.

import matplotlib.pyplot as plt

fig, ax = plt.subplots()

ax.plot([1,3,12])
ax.set_yticks([1,3,7,11])
ax.set_yticklabels(list("ABCD"))

for label in ax.get_yticklabels():
    if label.get_text() in ["B","C"]:
        label.set_weight("bold")

plt.show()

Note that this only works if, as in this case, the label text has been set previously via set_*ticklabels.

answered Jul 30, 2018 at 10:29

ImportanceOfBeingErnest

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